Fastest way to farm for fenrir?

[BreathlessTao]

I gave up on it, tbh... The very first time I saw the beast in Snowcloak, I was like "I WANT this as a mount, look at it, even its back is shaped appropriately"... and when they put it in GS, "YES I'm gonna get it!"... but since then, the total amount of MGPs I've had is somewhere just below 180k. GATEs are meh (and I have better things to do than spend all my days in GS), and I simply can't be arsed about either TT or chocobo racing. Way too mind-numbingly grind, with way broken/cheated systems, and way too little return. Neither time, nor patience, nor, really, mood/motivation. And since HW, it's become even more obsolete, not being able to fly. (NOT asking for it, as it would be way too senseless, imo... Don't even agree with making those stupid ponies fly, either.)